Step ladder extension



FIG. 1 is a side view of the step ladder extension.

FIG. 2 is a rear view of the claimed design.

FIG. 3 is a front view of the claimed design.

FIG. 4 is a top view of the claimed design.

FIG. 5 is a bottom view of the claimed design.

FIG. 6 is a front top perspective view of the claimed design; and,

FIG. 7 is a front bottom perspective view of the claimed design.

CLAIM I claim the ornamental design for a step ladder extension, asshown and described.